still form the basis of some 66% of copper cathode production today Located 10 km from Ndola the Bwana Mkubwa SX–EW plant (BMML) was established by First Quantum Minerals (FQM) in 1998 to process oxide tailings from dams in the area In 2003 the plant was redesigned and expanded to process oxide ore from the Lonshi deposit located some 35 SOLVENT EXTRACTION PROCESS DEVELOPMENT AT GIRILAMBONE COPPER COMPANY - PREDICTED vs PLANT PRACTICE David Readett1 Graeme Miller1 and Harry Holle2 1 CMPSF Pty Ltd 2 Girilambone Copper Company 200 Mary Street Booramugga Rd Brisbane (SX-EW) plant in May 1993

Operations_GARS

Hydrometallurgy is the process of using aqueous solvent to dissolve or leach minerals from ores In the SX / EW Process the ore is leached with sulphuric Acid then the copper is extracted from the acid leach with a solvent and the copper is subsequently electrolytically refined

SX-EW has continued to demonstrate successful use in effectively extracting and recovering copper from low grade and oxide ores As a result SX-EW has quickly become a staple in the copper industry SX-EW is currently responsible for producing around 20% of the world's copper (see the infographic on copper production)

Heap leaching is used around the world to recover copper from low-grade oxide deposits As with any hydrometallurgical process there is an intrinsic need to bleed a portion of electrolyte for impurity control In the case of SX-EW operations this bleed often deports to the raffinate pond which negatively affects the leach efficiency in the heap

Nothing beats the vast variety of international metallurgical experience of PPM Global engineers when it comes to helping our international mining company clients improve mineral recovery grades mineral economics ROI extending process plant life while improving process plant operator safety and minimising environmental impacts near process plant mine sites

Copper ore divides into ore sulfide ore oxide and mixing ore according to its oxide rate The main process for copper ore is flotation for refractory mixed copper ore and refractory oxide ore normally use hydrometallurgy process It is a high technological enterprise that integrated research manufacture sales and service The company has multiple subsidiaries such as

Recent Developments in Copper Hydrometallurgy

Morenci Western Copper concentrate mineralogy yMixed chalcopyrite covellite chalcocite pyrite Medium temperature and direct electrowinning ("MT-DEW") process selected yBest fit with Morenci concentrate production and acid balance yUtilize existing EW and SX capacity at Morenci Copper production capacity = 75 000 tons per year

The leaching solvent extraction and electrowinning (LX-SX-EW) process is a widely used method in the production of copper from low-grade oxidized ore Copper is the most common metal to be processed by LX-SX-EW but the process can also be used to extract purify and concentrate other metals such as nickel cobalt and zinc

Are you looking to expand the existing capacity of your SX-EW plant? Read about how the process of SX-EW can be enhanced to improve copper recovery of heap leach operations and how decreasing the recycling load will lead to increased plant capacity and increased savings

To meet these challenges emew's combination of purpose built process solutions coupled with proven technology enable valuable metals such as Copper Silver Gold Nickel and Cobalt to be recovered from complex mixed-metal residues sludges slags oxides scrap e-waste spent Li-ion batteries and more

conducted by CORE aimed at fully defining SX-EW leach parameters and generating customer DMS (Dense Media Separation) product samples – all designed to unlock greater cobalt and copper value Highlights • Kalongwe Stage 2 Scoping Study for potential leaching/SX-EW processing of the Kalongwe copper-cobalt deposit awarded to Lycopodium

Solution mining followed by solvent extraction-electrowinning (SX-EW) is one possible way to economically extract copper from ore bodies which cannot otherwise be profitably exploited Published costs for the unit processes of SX and EW are out of date especially in view of the newer reagents now available and the newer circuit configurations

Center demonstration of the process technology at Pori Finland in 2004 • Chloride based technology using chlorine gas and hydrogen Intec • Demonstration plant was constructed and operated during 1998 and 1999 in Sydney • Complex chemistry using sodium chloride-sodium bromide electrolyte • Copper EW from the cuprous (one electron

Helps to increase the residence time for better leaching efficiencies of Copper and Cobalt CCDs: Improves the post leach solid- liquid separation with better washing efficiency to increase recover y of metals Clarification Polishes off residual solids from leached liquor for better performance of Copper SX plant

Valve solutions for copper leaching solvent extraction

Valve solutions for copper leaching solvent extraction and electrowinning Process overview The leaching solvent extraction and electrowinning (LX-SX-EW) process is a widely used method for the production of copper from low-grade oxidized ore Although copper is the most common metal to be processed by LX-SX-EW the process can be used to

The copper-bearing solution from the solvent extraction operations is plated into pure copper cathodes using a process called solution exchange electrowinning (SX-EW) Stainless steel blanks are added to the plating tanks to act as cathodes and copper is plated onto them by electro-chemical deposition

Chuquicamata Project - Codelco - Chile - Dump leach/SX/EW for copper tailings - Supervision of all process design during study and basic engineering phases (1983) Gunpowder Copper SX/EW Project - Renison Goldfields - QLD - Australia - Supervised all process design during feasibility and basic engineering phases (1982)

In early 2012 the company decided to expand the plant's capacity to produce copper cathodes via a leaching-SX-EW process In April 2012 Grupo Mxico signed a contract with Outotec for delivery of a copper SX-EW technology package for the ESDE III plant with an annual copper cathode production capacity of 120 000 tons

(SX-EW) production of copper is expected to increase by 4 4% annually to reach 5 2 Tg (megatones) in 2013 (ICSG Press Release 2010) It is around 25% of the total copper production in the world Hydrometallurgical methods may be applied when high copper

Chuquicamata Project - Codelco - Chile - Dump leach/SX/EW for copper tailings - Supervision of all process design during study and basic engineering phases (1983) Gunpowder Copper SX/EW Project - Renison Goldfields - QLD - Australia - Supervised all process design during feasibility and basic engineering phases (1982)